function columnChartPanel(){
	
	var data = [['Low',40],['Medium',70],['High',90]];  
    
  	var statusStore = new Ext.data.ArrayStore({  
      fields:['status','data']
     }); 
	  
  	statusStore.loadData(data);
   
  	
  	var columnChart = new Ext.chart.ColumnChart({  
        store	: statusStore,  
        xField	: 'status',  
        yField	: 'data'  
    });  


    var columnpanel = new Ext.Panel({  
   	    title	: 'Column chart',
   	    border	: true,
	    width	: 550,
	    frame	: true,
   	    items	:[columnChart]  
   	});  

    var columnChartPanel = new Ext.Panel({  
	    renderTo: Ext.getBody(),
	    width	:550,  
	    defaults: {  
    	        height		:350,  
    	        collapsible	: false,  
    	        border		:true,  
    	        titleCollapse: true  
	    },  
	    items	: [columnpanel]  
	});  
    
   
    return columnChartPanel;
}